So your saying that your base is set at 17 and idles at 1000? This is too tough for me to figure out! If it idles at 1000 I would say start to bring in the mech. adv. at around 1300 or so and all in be 2000-2200 maybe? Is this really an 11.1 compression engine? With 17 degrees adv. and 18-20 mech. I would set full advancement at 35-37 all in by 2000-2200? Guy's, someone chime in and help, This is a little out of my territory!